Question

The green coating that develops on copper when it is exposed to moist air is a mixture of copper hydroxide and ______________________________

1 point

copper carbonate

copper chloride

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Answer 1

Explanation:

Copper forms a green deposit on its surface when exposed to air which is usually a mixture of copper carbonate and copper hydroxide.

The chemical reaction is

2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3

Answer 2

copper carbonate is the answer.